title: Reversal of polarity in masked o-benzoquinones: rapid access to unsymmetrical oxygenated biaryls.
abstract: An unprecedented diacetoxyiodobenzene induced direct arylation of guaiacol derivatives and electron-rich arenes using a Lewis acid as an activator furnishes unsymmetrical biaryls without prefunctionalization of both coupling partners. The addition of electron-rich arenes on the α-position of electrophilic masked o-benzoquinones in an anti-Michael addition fashion affords the highly oxygenated unsymmetrical biaryls in good to excellent yields.
authors.affiliation: Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
authors.forename: Santosh Kumar
authors.initials: SK
authors.lastname: Reddy Parumala
authors.forename: Rama Krishna
authors.initials: RK
authors.lastname: Peddinti